汽车悬架下弯臂的快速逆向设计与有限元分析

Fast reverse design and finite element analysis of the bending arm of automobile suspension

针对某进口汽车悬架中弯臂逆向设计效率低和复杂曲面设计难度大等问题,通过分析该零件的形状特征,研究了其实体逆向设计的方法。利用Geomagic Design X软件,并结合正逆向混合建模的思路实现了悬架弯臂中各部位的特征提取,快速完成了实体模型的重构;通过Geomagic Control X软件对所重构的实体模型进行了精度分析,验证了该方法的有效性;最后对弯臂进行了有限元的静力学分析,与设计强度的要求进行了比较,验证了逆向设计方法的可行性。研究结果表明:该方法为汽车悬架中一些复杂铸件的逆向设计提供了一种真实可行的设计思路,同时能够缩短此类零件设计和改进的周期,加快产品的正逆向研发速率。

Aiming at the problems of inefficient reverse design and complex surface design of bent arms in-an imported automobile suspen-sion,by analyzing the shape characteristics of the part,the method of its inverse design was studied.Geomagic Design X software was used to combined with the idea of forward and reverse hybrid modeling,the feature extraction of each part of the suspension bent arm was realized,and the reconstruction of the solid model was completed quickly.The accuracy of the proposed method was verified by Geomagic Control X software.Finally,the finite element static analysis of the bent arm was compared with the design strength requirements,and the feasibility of the reverse design method was verified.The research results show that this method provides a realistic and feasible design idea for the reverse design of some complex castings in automotive suspensions.At the same time,it can shorten the cycle of design and improvement of such parts and accelerate the rate of product forward and reverse development.